Miles to KM Converter
Convert miles to kilometers instantly. Each mile equals exactly 1.609344 km, so race times and road distances translate cleanly to metric.
How to convert miles to km
- Enter the distance in miles into the box above.
- The kilometer equivalent updates live as you type.
- Switch either dropdown to convert between any length unit on this site.
The formula
Kilometers are found by multiplying miles by 1.609344:
kilometers = miles × 1.609344
Reversed, miles = kilometers × 0.621371.
Common miles to km values
| Miles | Kilometers |
|---|---|
| 1 mi | 1.6093 km |
| 5 mi | 8.0467 km |
| 10 mi | 16.0934 km |
| 26.2 mi | 42.1647 km |
| 50 mi | 80.4672 km |
| 100 mi | 160.9344 km |
Related tools
- KM to Miles converter — go the other way.
- Feet to Meters converter — for shorter distances.
Frequently asked questions
- How do I convert miles to kilometers?
- Multiply the number of miles by 1.609344. For example, 5 mi × 1.609344 ≈ 8.047 km. The converter above updates the result as you type.
- How many kilometers are in a mile?
- Exactly 1.609344 kilometers make up one mile — this is the internationally defined ratio, not a rounded approximation.
- What is a marathon (26.2 miles) in kilometers?
- A marathon distance of 26.2 miles is about 42.16 km. The official marathon distance is actually defined as 42.195 km — 26.2 miles is itself a rounded figure.
- How fast is 60 mph in km/h?
- Multiply by 1.609344: 60 × 1.609344 ≈ 96.56 km/h. The same conversion factor applies whether you’re converting a distance or a speed.
- Why is 1.609344 the exact factor?
- The international mile is legally defined as exactly 1609.344 meters (since 1959), so multiplying miles by 1.609344 always gives an exact kilometer value.
- Is anything I enter uploaded or logged?
- No. The conversion happens entirely in your browser — nothing you type is sent to a server or stored.